Mechanical movement



April R. H. LAWSON MECHANICAL MOVEMENT Filed July 29, 1930 2 Sheets-Sheet //v l/E/V TOR April 19, 1932. R. H. LAWSON v MECHANICAL MOVEMENT 2 Sheets-Sheet 2 Filed July 29, 1950 Patented Apr. 19, 1932 UNITED STATES PATENT OFFICE.

ROBERT H. LAWSON, 0F BEVERLY, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MA- CHINERY CORPORATION, OF. PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY Original application filed July 24, 1928, Serial No. 295,080. Divided and this application filed July 29, 1930. Serial No. 471,514.

This invention relates to machines for inserting fastenings and is herein illustrated as embodied in a lasting machine having means for working a shoe upper into lasted relation to a last and insole and to insert fastenings through the marginal portion of the upper into the insole to secure the upper permanently in lasted relation to the insole, this application being a division of a copending parent application Serial No. 295,080, filed on July 24, 1928. The present invention relates more particularly to mechanism utilized to control the staple forming and inserting mechanism whereby fastenings are formed from a length of wire presented to the forming instrumentalities and driven into the work. Accordingly it is an object of the present invention toprovide improved controlling means for staple forming and inserting mechanisms well adapted for use in a side lasting machine of the type illustrated in my co-pending application referred to above, but capable of use independently thereof, which will be simple and compact in construction and which will be selfcontained to such an extent that it may be moved as a unit relatively to the machine parts by which it is operated without interfering in the slightest with its effectiveness.

To this end the various relatively movable parts of the staple-forming and inserting mechanism illustrated are carried by a plurality of levers so related that all of the levers of the mechanism are operated and controlled by the rocking of one of the levers about its fulcrum, thus there need be only a single movable connection between the'drivin g mechanism of the machine and the stapleforming and inserting mechanism, which connection with the mechanism herein illustrated takes the form of a link the operation of which is not disturbed by moving the stapling mechanism relatively to the power-supplying parts of the machine.

The invention will now be more particularly described by reference to the accompanying drawings and thereafter pointed out in the claims.

In the drawings, I

Fig. 1 is a side elevation with a cover plate removed, of the staple-forming and insert ing instrumentalities, the parts being shown in the position which they occupy during the wire feeding operation;

Fig. 2 is a side elevation of the parts shown in Fig. 1 illustrating the relative positions of the parts at the completion of the staple-inserting operation;

Figs. 3 and 4 are detail views of portions of the staple-forming and driving mechanism; and

Fig. 5 illustrates the positions of the levers by which the staple-forming and inserting instrumentalities are carried when the machine is at rest.

- The illustrated staple-forming and inserting mecahnism is carried by two levers 10, 12 fulcrumed at 14 and a lever 16 fulcrumed at 18 to two parallel plates secured to the head of the machine. A link 20 is pivoted at 22 to the lever12. An arcuate driver 24, T- shaped in cross section, is clamped at 26 to the lever 12 and passes through a similarly shaped driver passage 28 formed in a throat member 30 carried by the lever 10. An inside former 32 is provided at the lower end of a lever 34 fulcrumed to the plates at 18. A rod 36 is pivoted at one end to the lever 34 and passes at the other end through a hole38 formed in anarm 40 of the lever 16. A nut and a lock nut 42 threaded on the end of the rod 36 limit the movement of the lever 34 in a clockwise direction as viewed in Figs. 1 and 2 under the influence of a compression spring 44 surrounding the rod 36 and bearing at one end against a shoulder formed upon the rod and at the other end against the arm 40 of the lever 16. As illustrated the lever 16 is in the form of two parallelplates straddling the lever 12. One of the plates ofthe lever 16 is provided with a slot 46, the upper portion 48 of which is straight and the lowerportion 50 of which is formed as an arc of a circle which,- when the parts are in staple-inserting position (Fig. 2) is concentric with the fulcrum 14 of the levers 10, 12. The'slot 46 receives a pin carried at the outer end of the lever 12. The pin may and as illustrated does carry a roll 52. Thus as the lever 12 is rocked in a clockwise direction as viewed in Fig. 1 the lever 16 will be rocked in a counterclockwise direction until the roll 52 reaches the arcuate portion of the slot 46. WVhen this position is reached further movement of the lever 12 will not affect the position of the lever 16, which on the contrary will be locked against rocking movement by the presence of the roll 52 in the arcuate portion of the slot 46. The lever 10 is provided with a straight slot 54 to receive a pin carried by the lever 16. The pin may and as illustrated does carry a roll 56. As the lever 16 is rocked during the earlier part of the movement of the lever 12 while the roll 52 moves along the straight portion 48 of the slot 46, the lever 10 is also rocked in a clockwise direction through the engagement of the roll 56 carried by the lever 16 in the slot 54 of the lever 10. When, however, the roll 52 reaches the arcuate portion 50 of the slot 46 of the lever 16 and the lever 16 thus becomes stationary, the lever 10 is also looked against further movement. At this time lines drawn from the center of the fulcrum 14 to the center of the roll 56, and from the center of the roll 56 to the center of the fulcrum 18, are at right angles to each other. At this time also the outer end of the throat member 30 is pressed firmly aganst the work piece as shown in Fig. 2 and it is so held during the driving of each staple. Each throat member 30 is formed of two principal parts shown in Figs. 1 and 2. These consist of a block 58 having an arcuate outer surface concentric with the fulcrum 14 of the lever 10 in which surface is formed a driver passage or throat opening 28 of T- shaped cross section corresponding to that of the driver 24 and a cover plate 60 formed with a slot therein to permit entrance of the inside former 32. Adjacent to the slot the cover plate is provided with a shoulder 62 cooperating with a pawl 64 fulcrumed at 66 to the lever 34 and urged in a clockwise direction as viewed in Figs. 1 and 2 against a pin 68 by means of a spring 70. The lower portion of the forward end of the cover plate 60 serves as a wiper to wipe the shoe upper 100 over the feather and into engagement with the rib of the insole 102.

Each throat member 30 is provided with a wire passage 68, which is positioned in alinement with wire feeding mechanism not shown, to receive a length of wire and is moved from that position to shear the wire from a continuous strip during the return movement of the throat member 30. The feeding of the wire takes place soon after each staple has been driven and while the parts are approximately in the position shown in Fig. 1. Each throat block 30 carries a spring-pressed plunger 71 having a head 72 in which is formed a slot which, when the plunger is in the position shown in Fig. l, constitutes part of the driver passage. The

' upper portion of. the head 72 forms also part of one of the walls of the wire passage 68. Thus the walls of the wire passage 68 are iubstantially complete at the time the wire is The plunger 71 is positioned in the path of movement of the inside former 32 and, when the inside former 32 moves into operative position, is displaced leaving the inside former just ahead of the wire from which a staple is to be formed. Downward and forward movement of the throat member 30 relatively to the inside former 32 at this time causes the walls of the driver passage 28 to act as outside formers forming a staple from the piece of wire.

When the lever 12 is rocked in a clockwise direction from the position shown in Fig. 5 the rocking movement of the levers 12 and 10 is relatively great, the lever 10 moving almost as fast as the lever 12, so that the driver 24 does not reach the position of the wire passage until after a staple has been formed and the inside former 32 withdrawn. After the staple has been formed, however, and after the inside former has been withdrawn the lever 10 slows down and finally comes torest in engagement with the work before the lever 12 has finished its movement. Continued movement of the lever 12 while the levers 10 and 16 are stationary causes the driver 24 to move forward and to drive a staple through the shoe upper 100 and the rib of the insole 102. the legs of the staple being clenched against a cl nching cavity formed in a substantially vertical surface of a presser foot 104 mounted between parallel plates which are secured to the head of the machine in the same manner as the machine of my copendinn application referred to above.

Having thus described my invention what I i claim as new and desire to procure by Letters Patent of the United States is:

1. A machine having, in combination, three levers mounted for swinging movement,

said levers being interconnected by pin and non-aligned slots so disposed that swinging of one of the levers about its fulcrum is at first operative to cause the second lever to the other two levers about their fulcrurns aft which during continued movement of the that lever. the rollnnd-slot connection of tho levers holds the other two levers against further movement.

3. A machine having, in combination three levers, the first of said levers being provided with a pin and the second and third of said levers being provided with a pin and nonaligned slots, the pins of the first and second levers fitting in the slots of the second and third levers respectively whereby swinging of one of the levers about its fulcrum is at first operative to swing the other two levers about their fulcrums after which, during continued swinging of that lever, the roll-andslot connections of the levers hold the other two levers against further movement.

4. A machine having, in combination, a

lever, means for swinging said lever about its fulcrum, a roll carried by said lever, a second lever formed with a slot in which is located the roll carried by the first lever, a roll carried by the second lever, and a third lever formed with a slot in which is located the roll carried by the second lever, the roll-and-slol connections of thelevers being formed and arranged so that swinging movement of the first lever is at first operative to swing the second and third levers about their fulcrums after which, during continued swinging movement of the first lever, the roll-and-slot connections hold the second and third levers against swinging movement.

5. A machine having, in combination, three pivotally mounted levers, the first lever being provided with a pin and the second and third levers with a pin and non-aligned slots, the pins of the first and second levers fitting in the slots of the second and third levers, said slots being so disposed relatively to the fulcrums of all of the levers that movement of two of the levers is controlled by the swinging of one of the levers about its fulcrum;v

6. A machine having, in combination, three levers mounted for swinging movement about fixed parallel fulcrums, the first lever being provided with a pin and the second and third levers with a pin and non-aligned slots, the pins of the first and second levers fitting in the slots of the second and third levers, said slots being so disposed that movement of the first lever about its fulcrum is at first operative to cause the second lever to move the third lever about its fulcrum after which during continued movement of the first lever the second lever locks the third lever against further movement.

7. A machine having, in combination, three pivotally mounted levers two of which are mounted for movement about the same fu crum and one of which is mounted for movement about a remote fulcrum, and connections between the levers comprising pins carried by the first and second levers located in slots formed in the second and third levers, said slots being so disposed relatively to the fulcrums of the levers that movement of the first lever about its fulcrum is at first operative to swing the second and third levers about their fulcrums until the second lever locks the third lever against further movement, and one of said slots being so formed that continued swinging movement may be imparted to the first lever while the second and third levers are held in locked position.

8. A machine having, in combination, a lever, a roll carried by said lever, a second lever formed with a slot in which is located the roll carried by the first lever, a roll carried by the second lever, a third lever formed with a slot in which is located the roll carried by the second lever, the slot of the second lever having a portion formed as an arc of a circle, and means for swinging said first-named lever about its fulcrum whereby through their roll and. slot connections the second and third levers are swung about their fulcrums until the second lever locks the third lever against swinging movement, whereupon the roll carried by the first lever, being then located in the arcuate portion of the slot formed in the second lever, prevents furtherswinging movement of the second lever while the first lever, is permittedto continue its swinging movement.

9. A machine having, in combinatioma slotted lever fulcrumed for swinging movement, a second lever mounted for, swinging movement about the same fulcrum as the first lever, a third lever mounted for swinging movement about a fulcrum'remote from that of'the other two levers and provided with a roll positioned in the slot of the first lever, a second roll carried by the secondlever and positionedin a slot formed in'the third lever, said last-named slot having a "portion eccentric relatively to the fulcrum of the first and third levers and a portion formed as an arc of a circle, and means for swinging the second lever about its fulcrum whereby through their roll and slot engagements the first and third levers are swung about their fulcrums until the roll carried by the second lever moves the third lever into such position that the arcuate portion of its slot is concentric with the fulcrum of the second lever, whereupon the roll carried by the second lever being then positioned in said arcuate portion of the slot prevents further movement of the third lever, the third lever also holding the first lever against swinging movement by reason of the location of the roll carried by the third lever in the slot of the first lever, thus permitting continued movement of the second lever.

10. A machine having in combination, a lever, a roll carried by said lever, a second lever mounted for swinging movement about a fulcrum remote from the fulcrum of the first lever and having a slot formed therein in which is positioned the roll carried by the first lever, said slot'having a portion eccentric'to the fulcrums of the first and second levers and a portion formed as an arc of a circle, aroll carried by the second lever, a third lever mounted for movement about the same fulcrum as the first lever and having. a

slot formed therein eccentric to the fulcrums of all of the levers and in which is positioned a roll. carried by the second lever, and means for swinging the first lever about its fulcrum whereby through their roll and slot connections the second and third levers are moved about their fulcrums until the arcuate'portionof the slot formed in the second lever is concentric with the fulcrum of the first and third levers at which time during continued swinging movementof the first lever the second and third levers are locked against further movement.

11. A machine having in combination, a lever, a roll carried by said lever, a second lever mounted for swinging movement about a fulcrum remote from the fulcrum of the first lever and having a slot formed therein in which is positioned the roll carried by the first lever, said slot having a portion eccentric to the fulcrums of the first and second levers and a portion formed as an arc of a circle, a roll carried by the second lever, a third lever mounted for movement about the same fulcrum as the first lever and having a slot formed therein eccentric to the fulcrurns of all of the levers and in which is positioned a roll carried by the second lever, and means for swinging the first lever about its fulcrum whereby through their roll and slot connections the second and third levers are moved about their fulcrums until the second lever reaches such a position relatively to the third lever that continued swinging movement of the second lever would reverse the direction of movement of the third lever at which time the arcuate portion of the slot formed in the second lever is concentric to the fulcrum of the first and third levers so that further swinging movement of the first lever is permitted while the second and third levers are locked against further movement.

12. A machine having in combination, a lever, a roll carried by said lever, a second lever mounted for swinging movement about a fulcrum remote from the fulcrum of the first lever and having a slot formed therein in which is positioned the roll carried by the first lever, said slot having a portion eccentric to the fulcrums of the first and second levers and a portion formed as an arc of a circle, a roll carried by the second lever, a third lever mounted for movement about the same fulcrum as the first lever and having a slot formed therein eccentric to the fulcrums of'all of the levers and in which is positioned aroll carried by the second lever, and means for swinging the first lever about its fulcrum whereby through their roll and slot connections the second and third levers are moved about their fulcrums until the second lever reaches such a position relatively to the third lever that lines drawn from the fulcruins of the second and third levers to the center of the roll carried by the second lever will be at right angles to each other at which time the arcuate portion of the slot formed in the second lever is concentric to the fulcrum of the first and third levers so that further swinging movement of the first lever does not affect the position of the second lever, the position of which relatively to the third lever holds the third lever against further movement.

13. A machine having, in combination, three pivotally mounted levers, the first and second of which are mounted for swinging movement about the same fulcrum while the third lever is mounted for movement about a fulcrum remote from the fulcrum of the first and second levers, a roll carried by the first lever positioned in a slot formed in the third lever, said slot having a portion eccentric to its fulcrum and a portion formed as an arc of a circle, a roll carried by said third lever positioned in a slot formed in said second lever, said slot in said second lever being formed eccentric to the fulcrum of said second lever, and means for swinging the first lever about its fulcrum whereby through their roll and slot connections the first lever moves the third lever about its fulcrum an amount depending upon the position of its eccentric slot relatively to its fulcrum while the third lever moves the second lever about its fulcrum an amount depending upon the position of its eccentric slot relatively to its fulcrum the movements of the second and third levers being completed at the time that the arcuate portion of the slot formed in the third lever is concentric to the fulcrum of the first lever at which time during continued swinging movement of the first lever the third lever holds the second lever against further movement.

In testimony whereof I have signed my name to this specification.

ROBERT H. LAWSON.

(IERTIFEGATE 0F CORRECTION.

Patent No. 1,854,658. April 19, 1932.

ROBERT H. LAWSGN.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as toliows: Page 2, line 114, claim 1, strike out the words "the other two levers about their fulcrums aft-" and insert instead "move the third iever about its fulcrum after"; and that the said Letters Patent should be read with this eorreetion therein that the same may conform to the record of the ease in the Patent Office.

Signed and sealed this 16th day of May, A. i). 1933.

J. Moore.

(Seal) Acting Commissioner of Patents. 

